Honolulu, Oahu, Hawaii

15 Oct 1938

USS S-26 departed Pearl Harbor, US Territory of Hawaii.

05 Oct 1939

US Navy formed the Hawaiian Detachment and based it at Pearl Harbor, US Territory of Hawaii.

28 Oct 1939

USS Pollack arrived at Pearl Harbor, US Territory of Hawaii.

22 Dec 1939

US Navy awarded a US$7,000,000 contract to build two new graving docks at Pearl Harbor, US Territory of Hawaii; the future Dock No. 2 was to be large enough to hold a battleship, while Dock No. 3 was to be made for destroyers and submarines.

07 May 1940

US President Roosevelt ordered the US Navy Pacific Fleet to remain in Pearl Harbor, US Territory of Hawaii indefinitely as a deterrent to Japanese expansionism.

12 Oct 1940

US Navy awarded a contract for various construction projects immediately outside the Pearl Harbor Navy Yard in the Hawaiian Islands.

03 Feb 1941

USS Arizona arrived at Pearl Harbor, US Territory of Hawaii.

Feb 1941

31 Mar 1941

Husband Kimmel and Walter Short received a report noting the weakness of the base at Pearl Harbor, US Territory of Hawaii to surprise air attacks.

Mar 1941

02 Apr 1941

USS Astoria departed Pearl Harbor, US Territory of Hawaii.

02 Jun 1941

Joseph Rochefort reported to the main US Navy building at Pearl Harbor, Territory of Hawaii for his new duty heading up a cryptanalysis section.

08 Jul 1941

USS Arizona arrived at Pearl Harbor, US Territory of Hawaii.

31 Jul 1941

USS Astoria arrived at Pearl Harbor, US Territory of Hawaii.

27 Sep 1941

Joseph Rochefort warned US commanders at Pearl Harbor, US Territory of Hawaii that the Japanese communication codes were being changed.

28 Sep 1941

Joseph Rochefort warned US commanders at Pearl Harbor, US Territory of Hawaii that the recent Japanese Navy communications changes might mean the preparation of a large exercise or another major action.

04 Oct 1941

US Navy awarded a contract to build Dock No. 4 and a 20,000-kilowatt bomb-proof power plant at Pearl Harbor Naval Shipyard, Oahu, US Territory of Hawaii.

17 Oct 1941

Harold Stark informed Husband Kimmel that in his personal opinion that while he expected Japan to take action some time in the near future, an attack on Pearl Harbor, US Territory of Hawaii was not likely.

27 Oct 1941

USS Arizona entered the Pearl Harbor Navy Yard, US Territory of Hawaii for overhaul, during which she would receive a mounting atop her foremast for future installation of a search radar.

29 Oct 1941

USS Astoria arrived at Pearl Harbor, US Territory of Hawaii.

01 Nov 1941

US Navy formed the Pacific Escort Force at Pearl Harbor to protect transports and certain merchant vessels carrying troops and valuable military cargoes between Hawaii and the Far East.

21 Nov 1941

Joseph Rochefort's US Navy cryptanalytic team in Pearl Harbor, US Territory of Hawaii detected the arrival of a Japanese submarine squadron in the Marshall Islands.

27 Nov 1941

Husband Kimmel met with Joseph Rochefort at Pearl Harbor, US Territory of Hawaii in the late afternoon to discuss possible moves Japan might take should Japan and United States continued to head toward a military conflict. Rochefort believed that the main Japanese thrust would be toward the South Pacific, and the Hawaiian Islands did not seem to be in direct danger for now.

01 Dec 1941

US Marine Corps 2nd Defense Battalion and 4th Defense Battalion arrived at Pearl Harbor, US Territory of Hawaii.

05 Dec 1941

USS Lexington departed Pearl Harbor, Hawaii Islands to ferry US Marine Corps SB2U Vindicator dive bombers to Midway Atoll.
USS Arizona arrived at Pearl Harbor, US Territory of Hawaii and was moored at Ford Island.
USS Astoria departed Pearl Harbor, US Territory of Hawaii to join Task Force 12.

06 Dec 1941

Japanese spy Yoshikawa reported US ship locations in Pearl Harbor; the message was decrypted aboard Japanese carrier Akagi 36 minutes later.
Battleships USS Oklahoma arrived at Pearl Harbor, Hawaii Islands.
Battleships USS Nevada arrived at Pearl Harbor, Hawaii Islands.

07 Dec 1941

Two strike waves were launched against Pearl Harbor on the island of Oahu, Hawaii. Akagi's torpedo planes were instrumental in sinking the battleships USS Oklahoma and West Virginia. Vice Admiral Nagumo ordered a withdrawal following recovery of the second attack wave.

09 Dec 1941

USS Pollack arrived at Pearl Harbor, US Territory of Hawaii.

13 Dec 1941

USS Pollack departed Pearl Harbor, US Territory of Hawaii for her first war patrol.
USS Astoria arrived at Pearl Harbor, US Territory of Hawaii.

15 Dec 1941

USS Saratoga arrived at Pearl Harbor, US Territory of Hawaii.
Japanese reconnaissance flying boats bombed Wake Island. Meanwhile, US Navy Task Force 14 (USS Saratoga, USS Astoria, USS Tangier, with escorts; under Rear Admiral Frank Fletcher), carrying a US Marine Corps expeditionary force consisted of elements of the 4th Defense Battalion and Marine Fighter Squadron 211, departed Pearl Harbor, US Territory of Hawaii to reinforce Wake.

16 Dec 1941

USN Task Force 14, centered around USS Saratoga, departed Pearl Harbor, US Territory of Hawaii to relieve Wake Island.
A Japanese floatplane flew near Pearl Harbor, US Territory of Hawaii in a reconnaissance mission.

20 Dec 1941

US Navy battleships Pennsylvania, Maryland, and Tennessee, damaged during the attack earlier in the month, departed Pearl Harbor, US Territory of Hawaii for shipyards on the west coast of the United States.

25 Dec 1941

US Navy Admiral Chester Nimitz arrived at Pearl Harbor, US Territory of Hawaii.

27 Dec 1941

USS Lexington arrived at Pearl Harbor, US Territory of Hawaii.
USS Saratoga arrived at Pearl Harbor, US Territory of Hawaii.

29 Dec 1941

USS Astoria arrived at Pearl Harbor, US Territory of Hawaii.

30 Dec 1941

American submarine Thresher departed Pearl Harbor, US Territory of Hawaii for the Marshall Islands and the Mariana Islands region.

31 Dec 1941

US Navy Task Force 11 with USS Saratoga departed Pearl Harbor, US Territory of Hawaii for patrol.
USS Astoria departed Pearl Harbor, US Territory of Hawaii.

04 Jan 1942

East of Lahaina Roads, Hawaii, Japanese submarine I-19 prepared to launch her E9W1 'Slim' floatplane for a night reconnaissance over Pearl Harbor. The submarine is spotted and an American patrol vessel. After the launch of the floatplane, I-19 spent the next hour successfully evading the patrol vessel. Nearly 3 hours later, the floatplane returned and reported 1 carrier (USS Saratoga), 9 cruisers, and 6 smaller warships in Pearl Harbor.

13 Jan 1942

USS Astoria arrived at Pearl Harbor, US Territory of Hawaii.

18 Jan 1942

Joseph Rochefort's cryptanalytic team in US Territory of Hawaii intercepted Japanese Navy radio messages that mentioned an invasion or occupation force against a target code named 'R', which Rochefort guessed was Rabaul, New Britain. He would pass this information to Chester Nimitz via Edwin Layton.

21 Jan 1942

USS Pollack arrived at Pearl Harbor, US Territory of Hawaii, ending her first war patrol.

24 Jan 1942

USS Astoria arrived at Pearl Harbor, US Territory of Hawaii.

26 Jan 1942

Joseph Rochefort's cryptanalytic team in US Territory of Hawaii reported that there were no radio traffic regarding Japanese carriers in the Gilbert Islands and Marshall Islands area, thus concluding that the planned US carrier strike in the two island groups should be able to continue without unexpected threats.

02 Feb 1942

USS Gar departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

05 Feb 1942

USS Enterprise and Task Force 8 arrived at Pearl Harbor, US Territory of Hawaii.

15 Feb 1942

USS Grayback departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

16 Feb 1942

USS Astoria departed Pearl Harbor, US Territory of Hawaii.

18 Feb 1942

USS Pollack departed Pearl Harbor, US Territory of Hawaii for her second war patrol.

19 Feb 1942

A Japanese floatplane flew near Pearl Harbor, US Territory of Hawaii in a reconnaissance mission.

24 Feb 1942

A Japanese E9W1 seaplane from submarine I-9 conducted a reconnaissance mission over Pearl Harbor, US Territory of Hawaii. When the aircraft returned to the submarine, both wings were damaged during the recovery.

02 Mar 1942

Joseph Rochefort reported that intercepted Japanese Navy radio messages revealed a planned air attack on a location code named AK, which was soon interpreted as Pearl Harbor, US Territory of Hawaii.

04 Mar 1942

At 0000 hours, US radar operators detected two signals approaching Pearl Harbor, US Territory of Hawaii; they were two H8K flying boats from Wotje, Marshall Islands via French Frigate Shoals (where they took on fuel from submarines I-15 and I-19). At 0130 hours, five PBY Catalina aircraft were launched, armed with torpedoes, to search for the carriers that the Americans thought where the flying boats must have launched from; at the same time, five US Army fighters were launched to attack the flying boats. At 0210 hours and 0230 hours, the two flying boats dropped their payloads uncontested, although the first bombs fell harmlessly in the mountains 10 miles from Pearl Harbor and the second bombs landed in the water just outside of Pearl Harbor. The two aircraft flew back to Wotje unscathed.

06 Mar 1942

Joseph Rochefort's cryptanalytic team at Pearl Harbor, US Territory of Hawaii began noticing a target location code named AF appearing in Japanese Navy radio messages, and that this target might be struck within a short time.

10 Mar 1942

At Pearl Harbor, US Territory of Hawaii, Joseph Rochefort concluded that the target AF which had appeared in Japanese radio messages in the past few days referred to either Johnston, Palmyra, or Midway, and he promptly sent out warnings to all three locations. Privately, he reported to his superiors that Midway was the likely target.

11 Mar 1942

USS Enterprise arrived at Pearl Harbor, US Territory of Hawaii.

25 Mar 1942

Joseph Rochefort's cryptanalytic team in Pearl Harbor, US Territory of Hawaii intercepted a Japanese Navy message that mentioned a campaign against a location with code name RZP.

26 Mar 1942

USS Lexington arrived at Pearl Harbor, US Territory of Hawaii and prepared for an overhaul in the drydock.

08 Apr 1942

Joseph Rochefort's cryptanalytic team in Pearl Harbor, US Territory of Hawaii intercepted a Japanese Navy message that assigned fleet carrier Kaga to the campaign against a location with code name RZP.

13 Apr 1942

USS Lexington departed Pearl Harbor, US Territory of Hawaii to rendezvous with USS Yorktown for a raid on Rabaul.

17 Apr 1942

Chester Nimitz accepted Joseph Rochefort's hypothesis that Port Moresby, Australian Papua was likely the target of the suspected Japanese Navy operation against the location code named RZP.

21 Apr 1942

Joseph Rochefort's cryptanalytic team based in Pearl Harbor, US Territory of Hawaii intercepted a Japanese Navy radio message noting that Carrier Division 5 (Shokaku and Zuikaku) were being detached from the Mobile Force for operations with the 4th Fleet in the South Pacific.

22 Apr 1942

Joseph Rochefort's cryptanalytic team based in Pearl Harbor, US Territory of Hawaii detected a concentration of Japanese warships at Rabaul, New Britain, including five carriers; while they correctly determined that Shokaku, Zuikaku, and Shoho being at Rabaul, they had mistakenly placed two others (including Kaga) at this location.

24 Apr 1942

Joseph Rochefort's cryptanalytic team based in Pearl Harbor, US Territory of Hawaii had intercepted Japanese Navy radio messages mentioning the existence of task forces bearing names such as MO Covering Force, MO Attack Force, RZP Occupation Force, RXB Occupation Force, etc. Rochefort would quickly arrive at the hypothesis that these task forces were organized for an attack in the Port Moresby, Australian Papua region.

27 Apr 1942

Joseph Rochefort's cryptanalytic team based in Pearl Harbor, US Territory of Hawaii reported that the Japanese Navy had changed call signs of some major warships, possibly indicating that a major operation was about to take place.
Joseph Rochefort's cryptanalytic team at Pearl Harbor, US Territory of Hawaii decrypted a radio message from Nobutake Kondo to Tokyo, Japan requesting navigation charts of the Aleutian Islands area and latest intelligence at AOE and KCN (which was determined to be Dutch Harbor and Kodiak in the Aleutian Islands).

30 Apr 1942

At Pearl Harbor, US Territory of Hawaii, Joseph Rochefort sent Chester Nimitz a report regarding Rochefort's hypothesis that the Japanese might soon be striking at Port Moresby, Australian Papua. Since radio intercepts made mention of multiple targets, he concluded that Tulagi in the Solomon Islands was also a likely target.

02 May 1942

USS Pollack departed Pearl Harbor, US Territory of Hawaii for her third war patrol.
Joseph Rochefort's cryptanalytic team in Pearl Harbor, US Territory of Hawaii intercepted a radio message from Nobutake Kondo's chief of staff regarding the formation of task forces for an offensive operation.

03 May 1942

Chester Nimitz departed Midway Atoll and returned to Pearl Harbor, US Territory of Hawaii.

04 May 1942

Joseph Rochefort's cryptanalytic team in Pearl Harbor, US Territory of Hawaii intercepted a radio message from battleship Kirishima to Isoroku Yamamoto's headquarters noting that due to Kirishima's repair work the battleship would not be able to participate in the upcoming campaign.

06 May 1942

Joseph Rochefort's cryptanalytic team in Pearl Harbor, US Territory of Hawaii intercepted a radio message from Kwajalein, Marshall Islands to Yokosuka, Japan noting the need for additional aircraft radio equipment for use with the AK campaign.

08 May 1942

Joseph Rochefort's cryptanalytic team in Pearl Harbor, US Territory of Hawaii detected hints that Japanese Navy fleet carriers and battleships were being attached, suggesting a large operation was being planned.

09 May 1942

Joseph Rochefort's cryptanalytic team in Pearl Harbor, US Territory of Hawaii intercepted a Japanese Navy radio message ordering carrier Akagi to make rendezvous with another fleet at Sasebo, Japan on 20 May 1942.

11 May 1942

Joseph Rochefort's cryptanalytic team in Pearl Harbor, US Territory of Hawaii intercepted a radio message from Nobutake Kondo noting that the occupation force for the upcoming campaign would proceed to Saipan, Mariana Islands to await the launch of the operation. Rochefort determined that this occupation force was likely to sail east rather than south, and Midway Atoll was a likely target.

12 May 1942

Chester Nimitz, based in Pearl Harbor in US Territory of Hawaii, received orders from Ernest King to withdraw William Halsey's carrier task force from areas near Japanese land-based aircraft, but Halsey was to remain in South Pacific region.

13 May 1942

Chester Nimitz, based in Pearl Harbor in US Territory of Hawaii, informed Ernest King that the next Japanese offensive would likely be aimed at Nauru and Ocean Islands, but it was also possible that the following offensive might be targeting the Hawaiian Islands or even the west coast of the United States, thus King should allow the two carriers currently in the South Pacific to move to the Central Pacific. In the evening, he secretly ordered William Halsey to conduct a show of force with his carrier force in the Tulagi, Solomon Islands area to deter the Japanese from moving against Nauru and Ocean Islands.
Joseph Rochefort's cryptanalytic team in Pearl Harbor, US Territory of Hawaii intercepted a radio message of Japanese warships requesting navigation charts of the Oahu, Hawaii area. Some time later, the team intercepted a message ordering aircraft transport ship Goshu Maru to embark the seaplane unit at Emidj island, Jaluit Atoll, Marshall Islands and sail to Saipan, Mariana Islands to join the AF campaign. Realizing that AF must already have a seaplane base or was a good location for a future seaplane base, Rochefort further confirmed that AF was Midway Atoll. Later in the evening, he sent this report to Chester Nimitz and the naval leadership in Washington DC, United States.

14 May 1942

Joseph Rochefort presented his Midway Atoll theory to Chester Nimitz's war plans officer Lynde McCormick. McCormick spent hours at Rochefort's office at the basement of the main navy building in Pearl Harbor, US Territory of Hawaii and was convinced that Rochefort's theory was likely correct. McCormick would return to Nimitz and would convince Nimitz to agree to this theory.

16 May 1942

Joseph Rochefort's cryptanalytic team in Pearl Harbor, US Territory of Hawaii intercepted a Japanese radio message containing Chuichi Nagumo's request for weather reports to be submitted to him at a location 50 miles northwest of AF starting from three hours prior to the pre-determined time of attack.

18 May 1942

At Pearl Harbor, US Territory of Hawaii, Edwin Layton informed Joseph Rochefort that while Chester Nimitz would like to receive further evidence that Midway Atoll was indeed the next Japanese target. Meanwhile, Chester Nimitz ordered William Halsey to bring his carrier group back to the Hawaiian Islands as a precaution.

19 May 1942

US Navy intelligence officer Lieutenant Commander Jasper Holmes arrived at the idea that Midway Atoll could send out a fake message regarding the water distiller breaking down, thus the base desperately needed a supply of fresh water. Holmes' superior Joseph Rochefort gave him the permission to execute this idea in the hopes that the Japanese would pick up this message and provide Rochefort's team a clue on whether the Japanese Navy's reference of AF pointed at Midway Atoll. Rochefort's team also began to find the mention of a new code name, MI, in Japanese messages starting on this date; Rochefort quickly determined it to be the operational code name for the strike on Midway Atoll.

20 May 1942

The Japanese, having intercepted the fake message regarding Midway Atoll's water distiller breaking down, reported to the invasion fleet the news and advised the fleet to take on additional supplies of fresh water. This message was intercepted by the US Navy radio intelligence team at Pearl Harbor, US Territory of Hawaii, and it allowed the US to confirm that the target of the next Japanese offensive was indeed Midway Atoll. In response, US Navy and Marine Corps dispatched reinforcements to Midway Atoll and the Aleutian Islands in expectation of an assault. On the same day, US Navy intelligence also intercepted a Japanese message containing the order of battle for the Midway Atoll and Aleutian Islands assaults; this message would be decrypted over the next several days.

27 May 1942

USS Astoria arrived at Pearl Harbor, US Territory of Hawaii.

29 May 1942

USS Finback arrived at Pearl Harbor, US Territory of Hawaii.

30 May 1942

USS Astoria departed Pearl Harbor, US Territory of Hawaii for Midway Atoll.

31 May 1942

USS Finback departed Pearl Harbor, US Territory of Hawaii for the anticipated Japanese attack on Midway Atoll.
Joseph Rochefort's cryptanalytic team in Pearl Harbor, US Territory of Hawaii intercepted a radio message noting that carrier Zuikaku's air group was being transferred out of the carrier, which provided a strong hint that Zuikaku was not going to participate in the upcoming offensive. Later on the same day, Chester Nimitz informed his carrier task forces commanders that the Japanese attack would likely take place on 3 Jun 1942, and the Japanese would be operating four fleet carriers.

01 Jun 1942

Joseph Rochefort's cryptanalytic team in Pearl Harbor, US Territory of Hawaii reported signs that their counterparts in Japan were monitoring carrier radio traffic in the Hawaiian Islands; Rochefort warned Nimitz of this fact, but the US carrier groups would not change their behavior.

09 Jun 1942

USS Finback arrived at Pearl Harbor, US Territory of Hawaii.

13 Jun 1942

USS Astoria arrived at Pearl Harbor, US Territory of Hawaii.

15 Jun 1942

Joseph Rochefort was made the temporary chief of the Intelligence Center of Pacific Ocean Areas, a new intelligence branch in the US Navy Pacific Fleet based in Pearl Harbor, US Territory of Hawaii.

16 Jun 1942

USS Pollack arrived at Pearl Harbor, US Territory of Hawaii, ending her third war patrol.

23 Jun 1942

At Pearl Harbor, US Territory of Hawaii, Joseph Rochefort received a message from Admiral Ernest King to congratulate him on a job well done. There were no mention of any award of medals or other forms of recognition.

25 Jun 1942

Joseph Rochefort officially assumed the role of the temporary chief of the Intelligence Center of Pacific Ocean Areas of the US Navy Pacific Fleet based in Pearl Harbor, US Territory of Hawaii.
USS Finback departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

05 Jul 1942

Joseph Rochefort's cryptanalytic team in Pearl Harbor, US Territory of Hawaii decrypted an intercepted Japanese Navy radio message noting that engineering units were en route to Guadalcanal in the Solomon Islands to construct an airfield.

14 Jul 1942

The Intelligence Center of Pacific Ocean Areas of the US Navy Pacific Fleet based in Pearl Harbor, US Territory of Hawaii officially began its operations; its first chief, in a temporary capacity, was Joseph Rochefort.

16 Jul 1942

USS Haddock arrived at Pearl Harbor, US Territory of Hawaii.

19 Jul 1942

The US Navy opened the Intelligence Center/Pacific Ocean Area at Pearl Harbor in the Territory of Hawaii with 190 men in its staff to analyze captured documents, to interrogate prisoners of war, and to conduct other naval intelligence related activities.

28 Jul 1942

USS Haddock departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

17 Aug 1942

USS Hornet and Task Force 17 departed Pearl Harbor, US Territory of Hawaii for the South Pacific.

23 Aug 1942

USS Finback arrived at Pearl Harbor, US Territory of Hawaii.

03 Sep 1942

Roscoe Hillenkoetter was made the first permanent chief of the Intelligence Center of the Pacific Ocean Areas in Pearl Harbor, US Territory of Hawaii, replacing temporary chief Joseph Rochefort. The ICPOA was a part of the US Navy Pacific Fleet.

23 Sep 1942

USS Finback departed Pearl Harbor, US Territory of Hawaii for her second war patrol.

10 Oct 1942

USS Pollack departed Pearl Harbor, US Territory of Hawaii.

12 Oct 1942

Pile driving for Dock No. 4 at Pearl Harbor Navy Yard, US Territory of Hawaii, began.

16 Oct 1942

US Navy radio intelligence officer Joseph Rochefort, serving in Pearl Harbor, US Territory of Hawaii, received a telegraph from his wife noting that Rochefort's father had passed away in California, United States.

22 Oct 1942

US Navy Pacific Fleet's chief communications officer John Redman ordered radio intelligence officer Joseph Rochefort to travel to Washington DC, United States for a temporary assignment. Rochefort would quickly note that it was likely to be the first step in his removal from his current command at Pearl Harbor, US Territory of Hawaii.

28 Oct 1942

From his headquarters in Pearl Harbor, US Territory of Hawaii, Chester Nimitz sent Ernest King a message protesting Joseph Rochefort's removal.

02 Nov 1942

USS Wahoo completed her scheduled overhaul at Submarine Base Pearl Harbor, US Territory of Hawaii. During the overhaul, a 4-inch (100-millimeter) gun and two 20-millimeter guns were installed. She immediately began a 3-day training period.

04 Nov 1942

Workers at Dock No. 4 at Pearl Harbor Navy Yard, US Territory of Hawaii began cutting piles using an underwater circular saw.

09 Nov 1942

Workers at Dock No. 4 at Pearl Harbor Navy Yard, US Territory of Hawaii began placing rocks, mostly 3-inch quarry waste, at the bottom of the dock.

10 Nov 1942

USS Whale began a period of repair at Pearl Harbor Navy Yard, US Territory of Hawaii.

15 Nov 1942

20 Nov 1942

USS Finback arrived at Pearl Harbor, US Territory of Hawaii, ending her second war patrol.

29 Nov 1942

USS Pollack arrived at Pearl Harbor, US Territory of Hawaii, ending her fourth war patrol.

04 Dec 1942

USS Haddock arrived at Pearl Harbor, US Territory of Hawaii, ending her second war patrol.

07 Dec 1942

Workers at Dock No. 4 at Pearl Harbor Navy Yard, US Territory of Hawaii began placing sand on top of the rock foundation.

12 Dec 1942

USS Tunny arrived at Pearl Harbor, US Territory of Hawaii.

16 Dec 1942

USS Finback departed Pearl Harbor, US Territory of Hawaii for her third war patrol. The first phase of this war patrol would be to escort a carrier force rather than to hunt for enemy shipping.

19 Dec 1942

Workers at Dock No. 4 at Pearl Harbor Navy Yard, US Territory of Hawaii began pouring concrete.

22 Dec 1942

Pile driving for Dock No. 4 at Pearl Harbor Navy Yard, US Territory of Hawaii, completed; a total of 9,694 piles were driven since 12 Oct 1942, averaging 30 feet in length.

28 Dec 1942

USS Haddock departed Pearl Harbor, US Territory of Hawaii for her third war patrol.

31 Dec 1942

USS Pollack departed Pearl Harbor, US Territory of Hawaii for her fifth war patrol.

1942

01 Jan 1943

A new marine railway for handling destroyers and submarines began construction at Pearl Harbor Navy Yard, US Territory of Hawaii.

02 Jan 1943

USS Whale completed a period of repair at Pearl Harbor Navy Yard, US Territory of Hawaii.

03 Jan 1943

USS Whale departed the Submarine Base, Pearl Harbor Navy Yard, US Territory of Hawaii.

12 Jan 1943

USS Tunny departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

14 Jan 1943

Workers at Dock No. 4 at Pearl Harbor Navy Yard, US Territory of Hawaii completed cutting underwater piles.

06 Feb 1943

USS Finback arrived at Pearl Harbor, US Territory of Hawaii, ending her third war patrol.

07 Feb 1943

10 Feb 1943

USS Pollack arrived at Pearl Harbor, US Territory of Hawaii, ending her fourth war patrol.

21 Feb 1943

US Marine Aircraft Group 21 was transferred to USS Nassau at Ford island (with 54 Wildcat fighters) for further transfer to the South Pacific.

24 Feb 1943

USS Tunny arrived at Pearl Harbor, US Territory of Hawaii.

27 Feb 1943

USS Finback departed Pearl Harbor, US Territory of Hawaii for her fourth war patrol.

06 Mar 1943

USS Pollack departed Pearl Harbor, US Territory of Hawaii for her sixth war patrol.

11 Mar 1943

USS S-31 departed Pearl Harbor, US Territory of Hawaii for her sixth war patrol.

18 Mar 1943

USS Tunny departed Pearl Harbor, US Territory of Hawaii for her second war patrol.

24 Mar 1943

USS Scorpion arrived at Pearl Harbor, US Territory of Hawaii.

05 Apr 1943

USS Scorpion departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

11 Apr 1943

USS Snook departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

13 Apr 1943

USS Finback arrived at Pearl Harbor, US Territory of Hawaii, ending her fourth war patrol.

14 Apr 1943

US Navy Fleet Radio Unit Pacific Fleet decoded a intercepted Japanese Navy message, which allowed the US to learn that Yamamoto was planning on an inspection of three front-line bases on and near Bougainville Island. The decrypted message was immediately forwarded to Admiral Chester Nimitz at Pearl Harbor, US Territory of Hawaii.

19 Apr 1943

USS Haddock arrived at Pearl Harbor, US Territory of Hawaii, ending her fourth war patrol.

30 Apr 1943

08 May 1943

USS Scorpion arrived at Pearl Harbor, US Territory of Hawaii, ending her first war patrol.

10 May 1943

USS Pollack departed Pearl Harbor, US Territory of Hawaii for her seventh war patrol.

12 May 1943

USS Finback departed Pearl Harbor, US Territory of Hawaii for her fifth war patrol.

15 May 1943

USS Hoe arrived at Pearl Harbor, US Territory of Hawaii.

20 May 1943

Workers at Dock No. 4 at Pearl Harbor Navy Yard, US Territory of Hawaii completed concrete work.

27 May 1943

USS Hoe departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

29 May 1943

USS Scorpion departed Pearl Harbor, US Territory of Hawaii for her second war patrol.

30 May 1943

USS Grayback arrived at Pearl Harbor, US Territory of Hawaii, ending her seventh war patrol.

07 Jun 1943

USS Harder departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

11 Jun 1943

The unwatering of the nearly-completed Dock No. 4 at Pearl Harbor Navy Yard, US Territory of Hawaii began.

25 Jun 1943

USS Mingo departed Pearl Harbor, US Territory of Hawaii for her first war patrol.
USS Pollack arrived at Pearl Harbor, US Territory of Hawaii, ending her seventh war patrol.

30 Jun 1943

USS Haddock departed Pearl Harbor, US Territory of Hawaii for her fifth war patrol.

11 Jul 1943

USS Hoe arrived at Pearl Harbor, US Territory of Hawaii, ending her first war patrol.

14 Jul 1943

USS Tunny arrived at Pearl Harbor, US Territory of Hawaii, ending her third war patrol.

18 Jul 1943

USS Snook arrived at Pearl Harbor, US Territory of Hawaii, ending her second war patrol.

19 Jul 1943

Dock No. 4 at Pearl Harbor Navy Yard, US Territory of Hawaii was ready for emergency use.

20 Jul 1943

USS Pollack departed Pearl Harbor, US Territory of Hawaii for her eighth war patrol.

26 Jul 1943

USS Scorpion arrived at Pearl Harbor, US Territory of Hawaii, ending her second war patrol.

05 Aug 1943

USS Tunny departed Pearl Harbor, US Territory of Hawaii for her fourth war patrol.

10 Aug 1943

USS Haddock arrived at Pearl Harbor, US Territory of Hawaii.F14,C68,

18 Aug 1943

USS Snook departed Pearl Harbor, US Territory of Hawaii for her third war patrol.

21 Aug 1943

USS Hoe departed Pearl Harbor, US Territory of Hawaii for her second war patrol.

24 Aug 1943

USS Harder departed Pearl Harbor, US Territory of Hawaii for her second war patrol.

30 Aug 1943

USS Cabrilla arrived at Pearl Harbor, US Territory of Hawaii.

02 Sep 1943

USS Haddock departed Pearl Harbor, US Territory of Hawaii for her sixth war patrol.

08 Sep 1943

USS Tunny arrived at Pearl Harbor, US Territory of Hawaii, ending her fourth war patrol.

11 Sep 1943

USS Tunny departed Pearl Harbor, US Territory of Hawaii.

12 Sep 1943

USS Cabrilla departed Pearl Harbor, US Territory of Hawaii for her first war patrol.
USS Finback arrived at Pearl Harbor, US Territory of Hawaii, ending her sixth war patrol.
USS Grayback arrived at Pearl Harbor, US Territory of Hawaii.

13 Sep 1943

USS Gar arrived at Pearl Harbor, US Territory of Hawaii, ending her ninth war patrol.

15 Sep 1943

A new marine railway for handling destroyers and submarines at Pearl Harbor Navy Yard, US Territory of Hawaii was completed.

16 Sep 1943

USS Pollack arrived at Pearl Harbor, US Territory of Hawaii, ending her seventh war patrol.

26 Sep 1943

USS Grayback departed Pearl Harbor, US Territory of Hawaii for her eighth war patrol.

29 Sep 1943

USS Mingo departed Pearl Harbor, US Territory of Hawaii for her second war patrol.

06 Oct 1943

The first docking at the newly completed Dry Dock No. 4 at Pearl Harbor Navy Yard, US Territory of Hawaii took place.

08 Oct 1943

USS Snook arrived at Pearl Harbor, US Territory of Hawaii, ending her third war patrol.
USS Harder arrived at Pearl Harbor, US Territory of Hawaii, ending her second war patrol.

13 Oct 1943

USS Scorpion departed Pearl Harbor, US Territory of Hawaii for her third war patrol.

14 Oct 1943

USS Corvina arrived at Pearl Harbor, US Territory of Hawaii.

18 Oct 1943

USS Hoe arrived at Pearl Harbor, US Territory of Hawaii, ending her second war patrol.

30 Oct 1943

USS Harder departed Pearl Harbor, US Territory of Hawaii for her third war patrol, this time as a member of a wolfpack.

04 Nov 1943

USS Corvina departed Pearl Harbor, US Territory of Hawaii for her first and only war patrol.

15 Nov 1943

USS Haddock arrived at Pearl Harbor, US Territory of Hawaii, ending her seventh war patrol.

20 Nov 1943

USS Mingo arrived at Pearl Harbor, US Territory of Hawaii, ending her second war patrol.

30 Nov 1943

USS Gar arrived at Pearl Harbor, US Territory of Hawaii.
USS Harder arrived at Pearl Harbor, US Territory of Hawaii, ending her third war patrol.

02 Dec 1943

USS Grayback departed Pearl Harbor, US Territory of Hawaii for her ninth war patrol.

07 Dec 1943

USS Whale completed a scheduled overhaul at Pearl Harbor Navy Yard, US Territory of Hawaii.

14 Dec 1943

USS Haddock departed Pearl Harbor, US Territory of Hawaii for her eighth war patrol.

29 Dec 1943

USS Scorpion departed Pearl Harbor, US Territory of Hawaii for her fourth war patrol.

04 Jan 1944

USS Grayback arrived at Pearl Harbor, US Territory of Hawaii, ending her ninth war patrol.

06 Jan 1944

USS Snook departed Pearl Harbor, US Territory of Hawaii for her fifth war patrol.

08 Jan 1944

USS Tang arrived at Pearl Harbor, US Territory of Hawaii.

26 Jan 1944

USS Hoe departed Pearl Harbor, US Territory of Hawaii for her third war patrol.

28 Jan 1944

USS Grayback departed Pearl Harbor, US Territory of Hawaii for her tenth war patrol.

05 Feb 1944

USS Haddock arrived at Pearl Harbor, US Territory of Hawaii, ending her eighth war patrol.

08 Feb 1944

USS Rock departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

11 Feb 1944

USS Finback arrived at Pearl Harbor, US Territory of Hawaii, ending her seventh war patrol.

27 Feb 1944

USS Tunny departed Pearl Harbor, US Territory of Hawaii for her fifth war patrol.
USS Harder arrived at Pearl Harbor, US Territory of Hawaii.

28 Feb 1944

USS Pollack departed Pearl Harbor, US Territory of Hawaii for her ninth war patrol.

06 Mar 1944

USS Snook arrived at Pearl Harbor, US Territory of Hawaii, ending her fifth war patrol.

10 Mar 1944

USS Haddock departed Pearl Harbor, US Territory of Hawaii for her ninth war patrol.

16 Mar 1944

USS Harder departed Pearl Harbor, US Territory of Hawaii for her fourth war patrol.

04 Apr 1944

USS Rock departed Pearl Harbor, US Territory of Hawaii for her second war patrol.

10 Apr 1944

USS Pompon arrived at Pearl Harbor, US Territory of Hawaii, ending her fourth war patrol.

17 Apr 1944

USS Guitarro arrived at Pearl Harbor, US Territory of Hawaii.

23 Apr 1944

USS Pintado arrived at Pearl Harbor, US Territory of Hawaii.

01 May 1944

USS Finback arrived at Pearl Harbor, US Territory of Hawaii, ending her eighth war patrol.

06 May 1944

USS Pompon departed Pearl Harbor, US Territory of Hawaii for her fifth war patrol.

07 May 1944

USS Guitarro departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

10 May 1944

USS Haddock arrived at Pearl Harbor, US Territory of Hawaii, ending her ninth war patrol.

16 May 1944

USS Pintado departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

21 May 1944

An explosion on a LST moored in Pearl Harbor, US Territory of Hawaii set off a chain reaction that caused massive damage to shipping and installations and heavy loss of life.

07 Jun 1944

USS Pollack arrived at Pearl Harbor, US Territory of Hawaii, ending her tenth war patrol.

08 Jun 1944

USS Tang departed Pearl Harbor, US Territory of Hawaii, starting her third war patrol in the East China Sea and the Yellow Sea.

26 Jun 1944

USS Croaker arrived at Pearl Harbor, US Territory of Hawaii.

15 Jul 1944

USS Pollack departed Pearl Harbor, US Territory of Hawaii for her eleventh war patrol.

19 Jul 1944

USS Croaker departed Pearl Harbor, US Territory of Hawaii for her first war patrol.
USS Seahorse sank arrived at Pearl Harbor, US Territory of Hawaii, ending her fifth war patrol.

25 Jul 1944

USS Segundo arrived at Pearl Harbor, US Territory of Hawaii.

28 Jul 1944

USS Hawkbill arrived at Pearl Harbor, US Territory of Hawaii.

29 Jul 1944

USS Becuna arrived at Pearl Harbor, US Territory of Hawaii.

04 Aug 1944

USS Tunny departed Pearl Harbor, US Territory of Hawaii for her seventh war patrol with the wolfpack 'Ed's Eradicators'.

12 Aug 1944

USS Whale completed refitting at Pearl Harbor Navy Yard, US Territory of Hawaii.

21 Aug 1944

USS Segundo departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

23 Aug 1944

USS Baya departed Pearl Harbor, US Territory of Hawaii for her first war patrol. Initially ordered to patrol between the Philippine Islands and the Palau Islands, her patrol area was later shifted to the South China Sea.
USS Becuna departed Pearl Harbor, US Territory of Hawaii for her first war patrol.
USS Hawkbill departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

03 Sep 1944

USS Tang arrived at Pearl Harbor, US Territory of Hawaii, ending her fourth war patrol.
USS Pompon arrived at Pearl Harbor, US Territory of Hawaii, ending her sixth war patrol.

09 Sep 1944

USS Rock departed Pearl Harbor, US Territory of Hawaii for her fourth war patrol.

11 Sep 1944

USS Blackfin arrived at Pearl Harbor, US Territory of Hawaii.

13 Sep 1944

USS Trepang departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

14 Sep 1944

USS Pintado arrived at Pearl Harbor, US Territory of Hawaii, ending her second war patrol.

17 Sep 1944

USS Tunny arrived at Pearl Harbor, US Territory of Hawaii, ending her seventh war patrol.

20 Sep 1944

USS Tunny departed Pearl Harbor, US Territory of Hawaii.

08 Oct 1944

USS Haddock departed Pearl Harbor, US Territory of Hawaii for her tenth war patrol.

09 Oct 1944

USS Pintado departed Pearl Harbor, US Territory of Hawaii for her third war patrol.

15 Oct 1944

USS Kete arrived at Pearl Harbor, US Territory of Hawaii.

28 Oct 1944

USS Sea Cat departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

31 Oct 1944

USS Kete departed Pearl Harbor, US Territory of Hawaii for her first war patrol.
USS Astoria arrived at Pearl Harbor, US Territory of Hawaii.

10 Nov 1944

USS Croaker arrived at Pearl Harbor, US Territory of Hawaii, ending her second war patrol.

13 Nov 1944

USS Caiman departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

18 Nov 1944

USS Snook arrived at Pearl Harbor, US Territory of Hawaii, ending her seventh war patrol.
USS Pollack arrived at Pearl Harbor, US Territory of Hawaii.

20 Nov 1944

USS Cod arrived at Pearl Harbor, US Territory of Hawaii.

05 Dec 1944

USS Wake Island arrived at Pearl Harbor, US Territory of Hawaii and disembarked the aircraft she was ferrying.

09 Dec 1944

USS Charr arrived at Pearl Harbor, US Territory of Hawaii.

10 Dec 1944

USS Haddock arrived at Pearl Harbor, US Territory of Hawaii, ending her tenth war patrol.

13 Dec 1944

USS Croaker departed Pearl Harbor, US Territory of Hawaii for her third war patrol in the Philippines Islands and South China Sea areas.

15 Dec 1944

USS Wake Island departed Pearl Harbor, US Territory of Hawaii.

16 Dec 1944

USS Puffer departed Pearl Harbor, US Territory of Hawaii for her sixth war patrol.

27 Dec 1944

USS Gar arrived at Pearl Harbor, US Territory of Hawaii, ending her fifteenth and final war patrol.

30 Dec 1944

USS Charr departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

09 Jan 1945

USS Sennet received minor repairs at Pearl Harbor Navy Yard, US Territory of Hawaii.

25 Jan 1945

USS Pollack departed Pearl Harbor, US Territory of Hawaii.

03 Feb 1945

USS Tunny departed Pearl Harbor, US Territory of Hawaii for her eighth war patrol.

03 Mar 1945

USS Tirante departed Pearl Harbor, US Territory of Hawaii.

07 Mar 1945

USS Cod arrived at Pearl Harbor, US Territory of Hawaii.

19 Mar 1945

USS S-35 was decommissioned from service at Pearl Harbor, US Territory of Hawaii.

24 Mar 1945

USS Cod departed Pearl Harbor, US Territory of Hawaii for her sixth war patrol.

25 Mar 1945

USS Finback arrived at Pearl Harbor, US Territory of Hawaii, ending her twelfth and final war patrol.

26 Mar 1945

USS Segundo arrived at Pearl Harbor, US Territory of Hawaii, ending her third war patrol.

02 Apr 1945

USS Gar departed Pearl Harbor, US Territory of Hawaii for the Mariana Islands.

03 Apr 1945

USS Franklin arrived at Pearl Harbor, US Territory of Hawaii.

14 Apr 1945

USS Tunny arrived at Pearl Harbor, US Territory of Hawaii, ending her eighth war patrol.

29 Apr 1945

USS Sea Robin arrived at Pearl Harbor, US Territory of Hawaii, ending her second war patrol.

09 May 1945

USS Carbonero arrived at Pearl Harbor, US Territory of Hawaii.

14 May 1945

USS Tunny departed Pearl Harbor, US Territory of Hawaii for her ninth war patrol.

28 May 1945

USS Manta departed Pearl Harbor, US Territory of Hawaii for her first war patrol.

01 Jun 1945

USS Sea Robin departed Pearl Harbor, US Territory of Hawaii for her third war patrol.
USS Pintado departed Pearl Harbor, US Territory of Hawaii for her fifth war patrol on lifeguard station off Japan.

08 Jun 1945

USS Guitarro arrived at Pearl Harbor, US Territory of Hawaii, ending her fifth and final war patrol.

25 Jun 1945

USS Sea Cat arrived at Pearl Harbor, US Territory of Hawaii, ending her third war patrol.

06 Jul 1945

USS Tunny arrived at Pearl Harbor, US Territory of Hawaii, ending her ninth and final war patrol.

09 Jul 1945

USS Macabi departed Pearl Harbor, US Territory of Hawaii.

16 Jul 1945

USS Manta arrived at Pearl Harbor, US Territory of Hawaii, ending her first war patrol.

17 Jul 1945

USS Wake Island arrived at Pearl Harbor, US Territory of Hawaii with 300 sacks of mail and 30 defective aircraft from Guam, Mariana Islands.

18 Jul 1945

USS Wake Island departed Pearl Harbor, US Territory of Hawaii after taking on 187 passengers.

06 Aug 1945

USS Sea Cat departed Pearl Harbor, US Territory of Hawaii for her first fifth patrol.

07 Aug 1945

USS Rock arrived at Pearl Harbor, US Territory of Hawaii.

08 Aug 1945

USS Manta departed Pearl Harbor, US Territory of Hawaii for her second war patrol.

22 Aug 1945

USS Haddock arrived at Pearl Harbor, US Territory of Hawaii, ending her twelfth war patrol.

25 Aug 1945

USS Pintado arrived at Pearl Harbor, US Territory of Hawaii, ending her sixth and final war patrol.

27 Aug 1945

USS Macabi arrived at Pearl Harbor, US Territory of Hawaii.

Facility

Pearl Harbor Navy Base and Ford Island Naval Air Station
Honolulu, Oahu, Hawaii

World War II Database

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